Date: Mon, 24 Apr 2006 12:07:06 +0200 From: Marcel Holtmann <marcel@holtmann.org> To: Carlos =?ISO-8859-1?Q?Fern=E1ndez?= Herranz <cfernandezh@udc.es> Cc: freebsd-bluetooth@freebsd.org Subject: Re: About Inquiry_with_RSSI Message-ID: <1145873226.21987.12.camel@localhost> In-Reply-To: <444C9BBA.4010206@udc.es> References: <4423D096.2010205@udc.es> <44248823.3040907@savvis.net> <44291782.8010003@udc.es> <1143546159.980113.1641.nullmailer@galant.ukfsn.org> <44292470.5020803@udc.es> <1143547703.630752.2338.nullmailer@galant.ukfsn.org> <44294D1D.4010901@udc.es> <1143558548.478651.3242.nullmailer@galant.ukfsn.org> <4447A36C.8070201@udc.es> <4447BB29.906@savvis.net> <444C9BBA.4010206@udc.es>
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Hi Carlos,
> Firsly, the command packets and constants:
>
> #define NG_HCI_EVENT_INQUIRY_RESULT_WITH_RSSI 0x22
>
> *typedef* *struct* {
> u_int8_t num_responses; //* number of responses *//
> } __attribute__ ((packed)) ng_hci_inquiry_result_with_rssi_ep;
>
> *typedef* *struct* {
> bdaddr_t bdaddr;
> u_int8_t pagescan_rep_mode;
> u_int8_t pagescan_period_mode;
> u_int8_t uclass[NG_HCI_CLASS_SIZE];
> u_int16_t clock_offset;
> char rssi;
> } __attribute__ ((packed)) ng_hci_inquiry_response_with_rssi;
and don't forget ng_hci_inquiry_response_with_rssi_and_pagescan_mode.
There exists buggy Bluetooth 1.2 devices from some companies that also
return the pagescan_mode field with this response even if it has been
removed from the specification.
To differentiate between these two events, you need to check the length
of the event and the num_responses. Use BlueZ as a reference on how to
do it.
Regards
Marcel
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